Rubbing-machine



(N0 Model.)

J. W. PENGILLE.

RUBBING MACHINE.

No. 580,21 Patented Apr. 6, 1897.

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UNITED STATES PATENT OFFICE.

JOHN IV. PENOILLE, OF JAMESTOIVN, NEIV YORK.

RUBBlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 580,218, dated April 6,1897.

Application filed July 15, 1896. Serial No. 598,880. (No model.)

To all whom it may concern:

Be it known that I, JOHN W. PENCILLE, a citizen of the United States,residing at Jamestown, in the county of Chautauqua and State of NewYork, have invented certain new and useful Improvements inRubbing-Machines; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the figures andletters of reference marked thereon, which form a part of thisspecification.

The object of my invention is to provide rubbing or polishing machineswith a rubbingblock and means for controlling the motion of the same.

It consists, first, in providing the block with a heavy metal base toprevent warping or getting out of line, the method of securing the blockto the head, and, second, improved arms for keeping the head-block inline, and one adapted to take the head lower than those heretofore used,all of which will be fully understood by this specification and theaccompanying drawings, in which Figure 1 is a side elevation of arubbingmachine having my improvements. Fig. 2 is a plan view of myimproved rubbing-block. Fig. 3 is a side elevation, partlyin section, ofrubbing-block and connection. Fig. 4 is a sectional view of theconnection for the arms, enlarged, with sleeve in cross-section.

In the working of rubbing-machines as heretofore made I have foundseveral serious faults. They are generally made with a single armcentrally pivoted at each end to drive the reciprocatingpolisher-carriage on the guide-bar, and are thus liable to tilt orcareen to one side; also, the outer end of the arm is set too high,giving too great distance from the surface of the rubbing-block, so thatmuch of the motion is lost and they are unwieldy and liable to get outof order. Then the rubbing-blocks are made wholly of wood and are liableto warp and become untrue, causing very unsatisfactory work to be done.To overcome these objections is the principal object of my invention.

As before stated, in the drawings my improvements are shown on a type ofrubbingmachine, but they may be used on any other style of frame where areciprocating motion is given the polishing-head. Accordingly only myimprovements need be pointed out in this description.

In Fig. 2 of the drawings, at each end of the arms 18 and 18", I havemetal piece 19, which is shown enlarged in Fig. 4, the two pieces 19 19being made alike for convenience. These pieces are turned to a propersize to rest in bearings, one at the end of the vertical rod 6, theother in the arm of sleeve 17, and are held in position by spurs orpointed screws having bearings in their center, their ends being turneddown to receive the ends of the drive-arms 18 18, which are secured tothem by suitable washers and nuts, as shown in Fig. 4. 20 is the upperpart of the sleevehead, and 21 is the pivot-screw, with pointed orspurred end. 22 is the water-cup.

Instead of the spurs or pointed screws 21 a bolt might go through thepiece, but the adjustment would not be as good. The arms might be eachof one piece of metal or hard wood, but I find it better to make eacharm in two parts and connect them by the adjustable screw-link orswivel, as shown. These pieces 19 19 and their connecting-arms 18 18form a strong driving mechanism and one that never tilts or careens andone which allows of a much lower connection to the movable sleeve 17than those heretofore used, thus greatly shortening the distance to thebottom of the polishing-block 13 14.

I prefer to make my rubbing-block of a piece of wood 14, having a heavymetal piece 13 secured to its under surface to prevent warping, and across-piece of metal 13' on top of the wood, and to the center of plate13 is attached a metal center piece, the wood being hollowed out toreceive it, and the metal center piece 16 is hollowed out to receive theoval-headed screw-bolt 16, which passes up through block 16 and screwsinto sleeve 17 to hold block 16 to it. Block 16 has oval-headed pins :0a: in each side, as shown. Rubbingblock 14 has screw-eyes 15 on itsupper surface near each end, and into these are booked the steel-Wiresprings 15 which are sprung over the oval-headed pins m at in the centerto hold the rubbing-block to the upper block and sleeve 16 and 17. Therubbing-block being on the oval-headed bolt 16 allows it to rock in alldirections and adapt itself to all surfaces where slightly uneven.-Wires 15 allow the block to be easily removed for re-covering with therubbing-felt 12, which should go over the whole under surface.

It is evident that in making this rubbingblock the exact descriptiongiven might be departed from, but I have found the one describedsubstantial and practical.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In rubbing and polishing machines, the adjustable reciprocating arms18, 18, their ends having bearings on centrally-pivoted pieces 19, 19,to connect the vertical bar 6 with reciprocating sleeve 17 substantiallyas shown and described.

2. In rubbing and polishing machines, a rubbing-block composed of woodpiece 14, heavy metal piece 13, flexible piece 12, metal cross-piece 13,having suitable connecting parts to secure the block to sleeve 17,substantially as shown and described.

3. In rubbing and polishing machines, a rubbing-block composed of parts12, 13, 13, 14, as described, having screw-eyes 15, 15, and spring-rods15 15 block 16, having pins 00, 00, with screw-bolt 16 to secure theparts to sleeve 17, substantially as shown and described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN PENOILLE.

lVitnesses:

R. G. OWENs, H. H. WARREN.

